本文讨论了小波变换及小波变换的奇异性检测理论，并将其应用于暂态行波故障特征的分析。
The paper discuss the singularity detection theory of wavelet transform, this theory is applied to analysis of fault characteristics of the transient traveling waves.
当电力电缆发生故障后，会由故障点向所电缆的两端发射暂态行波，这个暂态行波包含着丰富的故障信息。
When the faults happened, the transient traveling wave contained abundant information is emitted to the ends of cables by the faults.
将基于暂态行波的接地选线技术应用于现场，实现了基于电流行波的配电系统故障选线装置SL-11，并在现场对装置进行了多次试验。
The grounding line selector SL-11 has passed field tests of single-phase-grounding line selection in non-solidly grounding system, which is based on current transient traveling wave.
该文提出利用线路故障产生的暂态行波实现配电架空线、电缆混合线路单相接地及相间短路故障测距，分析了故障初始行波模分量的暂态特征。
Using transient traveling waves generated by fault to locate single-phase earth fault or short circuit fault in distribution feeders mixed with overhead lines and cables is proposed.
在行波故障测距中，传统的数据采集系统无法适应采集高速变化的暂态电压、电流行波的要求，难以实现故障的精确定位。
In traveling-wave fault locating, the traditional data acquisition system can not record the fast-changed traveling waves of voltage and current for accurate fault locating.
数值计算模型和参数的确定，是三相同壳结构GIS快速暂态过程行波分析的基础。
Transient parameters and numerical calculation model are fundamental to evaluate the traveling wave on very fast transients in three-phase enclosed GIS.
方向元件是基于行波或暂态量的超高速方向保护的核心元件。
Directional unit is the kernel unit of the traveling waves or transients based ultra-high-speed directional protection for transmission line.
本文列举了适用于谐振接地系统的各类新兴方法。如残流增量法、注入信号寻迹法、行波法、暂态法以及综合选线法。
This paper shows some new methods just like residual flow increment, signal tracking, traveling wave, transient state and complex selection.
行波保护的原理基于线路故障的暂态特征——行波引起的电压电流量的变化。
Its principle is based on the transient characteristics of the line fault, which is the changes in the voltage and current caused by the travelling wave.
行波保护的原理基于线路故障的暂态特征——行波引起的电压电流量的变化。
Its principle is based on the transient characteristics of the line fault, which is the changes in the voltage and current caused by the travelling wave.
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